scourer
洗擦者;洗擦物品
Scour·er n.
1. One who, or that which, scours.
2. A rover or footpad; a prowling robber.
In those days of highwaymen and scourers. --Macaulay.
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scourer
n 1: someone who cleanses by scouring
2: someone who travels widely and energetically; "he was a
scourer of the seven seas"